18.5.10.16 The ndbinfo server_transactions Table

The server_transactions table is subset of
the cluster_transactions
table, but includes only those transactions in which the current
SQL node (MySQL Server) is a participant, while including the
relevant connection IDs.

The following table provides information about the columns in
the server_transactions table. For each
column, the table shows the name, data type, and a brief
description. Additional information can be found in the notes
following the table.

Column Name

Type

Description

mysql_connection_id

integer

MySQL Server connection ID

node_id

integer

Transaction coordinator node ID

block_instance

integer

Transaction coordinator block instance

transid

integer

Transaction ID

state

string

Operation state (see text for possible values)

count_operations

integer

Number of stateful operations in the transaction

outstanding_operations

integer

Operations still being executed by local data management layer (LQH
blocks)

The transaction ID is a unique 64-bit number which can be
obtained using the NDB API's
getTransactionId()
method. (Currently, the MySQL Server does not expose the NDB API
transaction ID of an ongoing transaction.)

The state column can have any one of the
values CS_ABORTING,
CS_COMMITTING,
CS_COMMIT_SENT,
CS_COMPLETE_SENT,
CS_COMPLETING,
CS_CONNECTED,
CS_DISCONNECTED,
CS_FAIL_ABORTED,
CS_FAIL_ABORTING,
CS_FAIL_COMMITTED,
CS_FAIL_COMMITTING,
CS_FAIL_COMPLETED,
CS_FAIL_PREPARED,
CS_PREPARE_TO_COMMIT,
CS_RECEIVING,
CS_REC_COMMITTING,
CS_RESTART,
CS_SEND_FIRE_TRIG_REQ,
CS_STARTED,
CS_START_COMMITTING,
CS_START_SCAN,
CS_WAIT_ABORT_CONF,
CS_WAIT_COMMIT_CONF,
CS_WAIT_COMPLETE_CONF,
CS_WAIT_FIRE_TRIG_REQ. (If the MySQL Server
is running with
ndbinfo_show_hidden enabled,
you can view this list of states by selecting from the
ndb$dbtc_apiconnect_state table, which is
normally hidden.)

In client_node_id and
client_block_ref, client
refers to a MySQL Cluster API or SQL node (that is, an NDB API
client or a MySQL Server attached to the cluster).